/*	重名变量演示
 *
 */

#include<stdio.h>
int num;

int main () {
	printf("num=%d\n", num);
	int num = 1;
	printf("num=%d\n", num);
	{
		printf("num=%d\n", num);
		int num = 2;
		printf("num=%d\n", num);
	}
	printf("num=%d\n", num);
	return 0;
}
